Download or read book Optimum Field Element Size for Maximum Yields in Winter Wheat Using Variable Nitrogen Rates written by Joanne Marie La Ruffa and published by . This book was released on 1999 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precision agriculture 07 written by J.V. Stafford and published by BRILL. This book was released on 2023-08-28 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: "With ever-increasing pressures on world agriculture in both economic and environmental terms, application of the concept of precision agriculture is one way of enabling farmers and producers to cope. ‘Doing arable agriculture and horticulture more precisely’ means that the use of inputs is optimised, crop yield and quality are maximised and leakage of agro-chemicals and fertilisers to the environment is minimised. This publication contains papers presented at the 6th European Conference on Precision Agriculture. The papers reflect the wide range of disciplines encompassed by precision agriculture, including: soil physics, crop physiology, agronomy, IT, agricultural technology, sensor technology, remote sensing, geostatistics and environmental science. The wide range of research topics reported will be a valuable resource for researchers, advisors, teachers and professionals in agriculture long after the conference has finished. Peer-reviewed papers from the 3rd European Conference on Precision Livestock Farming are presented in a companion proceedings, Precision livestock farming ’07."
Download or read book Precision Agriculture 05 written by J.V. Stafford and published by BRILL. This book was released on 2023-08-28 with total page 1005 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The potential benefits of ‘doing things more precisely’ in agriculture include terms such as environmental, economic, audit trail, vehicle guidance, crop management and others. Whilst some benefits have proved elusive, others are contributing positively to today’s agriculture. In such an environment, continuing research is required - and needs to be reported and disseminated to a wide audience. These Proceedings contain papers presented at the 5th European Conference on Precision Agriculture, held in Uppsala, Sweden. The papers reflect the wide range of disciplines that impinge on precision agriculture - technology, crop science, soil science, agronomy, information technology, decision support, remote sensing and others. Peer-reviewed papers from the 2nd European Conference on Precision Livestock Farming are presented in a companion proceedings, Precision Livestock Farming ’05."
Download or read book Agronomy Abstracts written by and published by . This book was released on 1995 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts of the annual meetings of the American Society of Agronomy; Soil Science Society of America; Crop Science Society of America ( - of its Agronomic Education Division).
Download or read book Determination of Optimum Fall and Spring Nitrogen Fertilizer Rate for Maximizing Grain Yield of Soft Red Winter Wheat Sown at Variable Planting Dates written by Lucas Vasconselos Vieira and published by . This book was released on 2016 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: An optimum planting date is important for winter wheat nitrogen (N) management as it dramatically changes the growing environment including temperature and moisture, ultimately affecting fertilizer efficiency and grain yield (GY). In Arkansas, high precipitation in the fall often forces farmers to delay planting and current Arkansas recommendations include the application of fall N when soft red winter wheat (SRWW) is sown later than optimum, despite the lack of data supporting this practice. This study evaluated the effect of rate and timing of N application on GY of SRWW sown at variable planting dates in Arkansas. Granular urea was split applied between the fall (F), late winter (LW) and/or early spring (ES) and compared to N only applied in the spring (LW, or LW + ES). Experiments were conducted at the Newport Research Station (NPRS), Pine Tree Research Station (PTRS), and Rohwer Research Station (RWRS), representing the diverse wheat growing regions in Arkansas. Wheat was sown at three planting dates and supplied with total N rates of 67, 101, 135, 169, and 202 kg N ha-1. Fall-N rates equal to 0, 34, 67 kg N ha-1 were applied after planting at Feekes 3 and spring-N rates equal to 67, 101, 135 and 169 kg N ha-1 were applied at Feekes stage 4 or 5. There was no statistical difference between spring (LW and ES) and split N applications at NPRS where there was low precipitation and the highest residual soil-N and thus decreased potential for volatilization and denitrification. A split fall and spring application was important for maximizing GY on the latest planting date at both PTRS and RWRS and increased mean GY by 1122 and 544 kg ha-1 compared to spring only application, respectively. Overall, results suggest that splitting fertilizer-N between fall and spring has the potential for increasing GY in late-planted wheat in fine-textured soils when there is high precipitation, which favors N loss.
Download or read book Precision Agriculture Technology for Crop Farming written by Qin Zhang and published by CRC Press. This book was released on 2015-10-15 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a review of precision agriculture technology development, followed by a presentation of the state-of-the-art and future requirements of precision agriculture technology. It presents different styles of precision agriculture technologies suitable for large scale mechanized farming; highly automated community-based mechanized production; and fully mechanized farming practices commonly seen in emerging economic regions. The book emphasizes the introduction of core technical features of sensing, data processing and interpretation technologies, crop modeling and production control theory, intelligent machinery and field robots for precision agriculture production.
Download or read book Exploring Cultivar Response of Soft White Winter Wheat to Nitrogen and Seeding Rates and on Farm Testing of Variable Rate Seeding written by Cole W. Senefsky and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production of high yielding soft white winter wheat is dependent on synthetic fertilizer. In addition to using variable rate technology for nitrogen application, there is interest in further refining nitrogen use to more efficiently use this expensive input as well as exploring precision technology for other inputs such as seeding rate. In Northern Idaho, trials were established to examine the response of soft white winter wheat cultivars to nitrogen and seeding rates. An additional field trial was planted on the Camas Prairie to study applying variable rate seeding technology within three distinctive production zones. While there were differences among the cultivars, environment and seasonal variation had a significant impact on how cultivars respond to nitrogen and seeding rates. The variable rate seeding trial demonstrated that this technology may be feasible, but further exploration will be necessary to develop a suitable strategy for implementation in diverse environments.
Download or read book Optimizing Nitrogen Management for Soft Red Winter Wheat Yield Grain Protein and Grain Quality Using Precision Agriculture and Remote Sensing Techniques written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research was to improve nitrogen (N) management for soft red winter wheat (Triticum aestivum L.) in North Carolina with three areas of focus: delayed harvest effects on grain quality, explaining grain protein variability caused by management practices, and developing N recommendations at growth stage (GS) 30 using aerial color infrared (CIR) photography. Delayed harvest significantly reduced grain yield and test weight in the majority of trials. Yield reductions were attributed to dry, warm environments, possibly due to shattering. Test weight reductions were attributed to the negative effects of wetting and drying cycles. Of the 20 quality parameters investigated, flour falling number, clear flour, and farinograph breakdown times were significantly reduced due to delayed harvest, while grain deoxynivalenol (DON) levels increased with a delayed harvest. Environment contributed to grain protein variability (23%), though the majority of that variability was attributed to N management (52%). It was found that as grain protein levels increased at higher N rates and with the majority of N applied at GS 30, the overall grain protein variability increased. The recommendations to reduce grain protein variability are; to reduce the range in N fertilizer rates used, to avoid over application of N beyond what is required to optimize yields, and to apply spring N at GS 25. Relationships between derived agronomic optimum N rates and three spectral bands and 39 indexes were weak, but after separating the data into two biomass classes (low 1000 kg ha-1 and high 1000 kg ha-1), the relationships of optimum N rates with a relative Red and Green bands (relative to a high N-status reference plot) had the best (quadratic) relationships (R2 = 0.80 and 0.81, respectively) for the high biomass class. These results indicate that agronomic optimum N rates at GS 30 can be estimated using aerial CIR photographs if areas of low and high biomass can be determined.
Download or read book Nitrogen Efficiency in Agricultural Soils written by David S. Jenkinson and published by Pergamon. This book was released on 1988 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Seminar on nitrogen efficiency in agricultural soils and the efficiency use of fertilizer nitrogen, held in Edinburgh, 16-18 September 1987, as part of the EC Programme for the Coordination of Agricultural Research.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen in the Environment Sources Problems and Management written by R.F. Follett and published by Gulf Professional Publishing. This book was released on 2001-12-03 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen in the Environment: Sources, Problems, and Management is the first volume to provide a holistic perspective and comprehensive treatment of nitrogen from field, to ecosystem, to treatment of urban and rural drinking water supplies, while also including a historical overview, human health impacts and policy considerations. It provides a worldwide perspective on nitrogen and agriculture. Nitrogen is one of the most critical elements required in agricultural systems for the production of crops for feed, food and fiber. The ever-increasing world population requires increasing use of nitrogen in agriculture to supply human needs for dietary protein. Worldwide demand for nitrogen will increase as a direct response to increasing population. Strategies and perspectives are considered to improve nitrogen-use efficiency. Issues of nitrogen in crop and human nutrition, and transport and transformations along the continuum from farm field to ground water, watersheds, streams, rivers, and coastal marine environments are discussed. Described are aerial transport of nitrogen from livestock and agricultural systems and the potential for deposition and impacts. The current status of nitrogen in the environment in selected terrestrial and coastal environments and crop and forest ecosystems and development of emerging technologies to minimize nitrogen impacts on the environment are addressed. The nitrogen cycle provides a framework for assessing broad scale or even global strategies to improve nitrogen use efficiency. Growing human populations are the driving force that requires increased nitrogen inputs. These increasing inputs into the food-production system directly result in increased livestock and human-excretory nitrogen contribution into the environment. The scope of this book is diverse, covering a range of topics and issues from furthering our understanding of nitrogen in the environment to policy considerations at both farm and national scales.
Download or read book Wheat Experiments written by Melville Amasa Scovell and published by . This book was released on 1888 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wheat Experiments written by Kentucky Agricultural Experiment Station and published by . This book was released on 1887 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precision Agriculture 19 written by John V. Stafford and published by Brill Wageningen Academic. This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precision agriculture is a reality in agriculture and is playing a key role as the industry comes to terms with the environment, market forces, quality requirements, traceability, vehicle guidance and crop management. These proceedings contain reviewed papers presented at the 12th European Conference on Precision Agriculture. The papers reflect the wide range of disciplines that impinge on precision agriculture - technology, crop science, soil science, agronomy, information technology, decision support, remote sensing and others.
Download or read book Nitrogen in Agricultural Systems written by James Stuart Schepers and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Review of the principles and management implications related to nitrogen in the soil-plant-water system.
Download or read book Alfalfa Management Guide written by D. J. Undersander and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Alfalfa Management Guide is designed especially for busy growers, with to-the-point recommendations, useful images of diseased plants and pests, and quick-reference tables and charts. Revised in 2011, this edition of Alfalfa Management Guide covers the latest strategies for alfalfa establishment, production, and harvest-soil testing, fertilizing, integrated pest management, rotation, and more.
Download or read book Simulation of Water Use Nitrogen Nutrition and Growth of a Spring Wheat Crop written by H. van Keulen and published by . This book was released on 1987 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat models - a comparative review. Plant growth processes. Soil processes. Performance of the model.
